When a group of Native American plaintiffs challenged the Washington Redskins' trademark registrations—and, earlier this month, got the federal government to cancel them—several dictionary definitions of the team name as a slur were presented as evidence. Another dictionary, an online one, can be added to that group.

According to a report by MTV.com, Dictionary.com, widely described as one of the most often-used free online dictionaries in the country, will officially label the word as "disparaging and offensive.'' The qualifier "often" is being lifted.

The Redskins' logo (AP Photo)

Jane Solomon, senior content editor and lexicographer for Dictionary.com, told MTV.com that from the first appearance of the word more than 200 years ago, its usage has been "imbued with contempt and condescension.''

“So, is ‘redskin’ considered a slur?” she said. “Definitely. Dictionary.com is based on the Random House Dictionary, which was the first dictionary to include an offensive label on ‘redskin’ when originally published in 1966. The level of offense has risen over the last half century along with overall cultural sensitivity.”

Random House is one of the six dictionaries used by the plaintiffs in the trademark challenge to prove that "redskin" was a slur. According to the official U.S. Patent and Trademark Office decision, the Random House dictionary editions from 1967, 1973 and 1987 all defined the word as "often offensive" or "often offensive and disparaging."

The report did not specify when the change would take place. As of early Monday evening, the word was still described on Dictionary.com as "often disparaging and offensive."